height = float(input("请输入您的身高（m）:"))
weight = float(input("请输入您的体重（kg）:"))
BMI = weight/(height**2)
if BMI < 18.5:
    print("过轻")
elif 18.5 <= BMI < 25:
    print("正常")
elif 25 <= BMI < 28:
    print("过重")
elif 28 <= BMI <= 32:
    print("肥胖")
else:
    print("严重肥胖：")
